1. Centre for Academic Mental Health, School of Social and Community Medicine, University of Bristol, Bristol, UK
2. Mood Disorders Centre, University of Exeter, Exeter, UK
3. Centre for Academic Primary Care, School of Social and Community Medicine, University of Bristol, Bristol, UK
4. Academic Unit of Mental Health and Wellbeing, Institute of Health and Wellbeing, University of Glasgow, Glasgow, UK
5. ConDuCT Hub for Trials Methodology Research, School of Social and Community Medicine, University of Bristol, Bristol, UK
6. Primary Care Research Group, University of Exeter Medical School, Exeter, UK
7. Nottingham Psychotherapy Unit, Nottinghamshire Healthcare NHS Trust, Nottingham, UK
8. Avon and Wiltshire Mental Health Partnership NHS Trust, Chippenham, UK
9. Institute of Health and Wellbeing, General Practice and Primary Care Group, University of Glasgow, Glasgow, UK
10. School of Clinical Sciences, University of Bristol, Bristol, UK
11. Division of Psychiatry, University College London, London, UK